-59.04% is the change from 166 to 68
Calculation steps:
[( 68 - 166 ) ÷ 166] x 100 = -59.04%
Formula
Percentage change = [(68 - 166) / 166] x 100
Subtract the new number by the original number
68 - 166 = -98
-98 ÷ 166 = -0.5903614457831325
-0.5903614457831325 x 100 = -59.04%